I see what target audience he is writing for. Based on that, it's not a bad review. He does recommend the album.
I don't agree with him at all, but that reads like it's meant for those fans that are not hardcore DT fans, but do consider them the "kings of prog". Almost as it he's speaking to the Prog Elitists who know all of prog and hold DT up on this high pedestal of worship, and when their idols stray from their sermons, the worshippers become upset.
I feel the reviewer is showing what kind of fan he is of DT's music. I guess likes DTs "adventurous" side.
He also says "the band seems content to make music for themselves" as if that's a bad thing. I'd like to read his review for Puzzle, because that is an album that a musician has made for themselves.
With some things in life, you won't understand right off the bat in a day. Things take time to fully grasp and when they do, it's beautiful. Music is one of these things.
And I find it hilarious how a lot of people are saying how Sleeping Giant is their best and most DT-esque of the new songs. But i just can't get into it like others seem too. I think it's the Key the song is in and the rhythm/groove of the song. It has the same effect as Lost Not Forgotten and Beyond This Life for me. I still enjoy those songs from time to time, but won't actively seek them out to casually listen to.